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Mario Lopez and Ali Landry: 14 days
The former "Saved by the Bell" star married the model and actress on April 24, 2004, after six years of dating. The couple split on May 8, 2004, with the former Miss USA filing to have their marriage annulled. Lopez, in a 2011 interview with Us Weekly, admitted that the split came after Landry discovered he had cheated on her during his bachelor party days before the wedding.